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    Tytuł:
    Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition
    Autorzy:
    Moskalewicz, T.
    Babkiewicz, A.
    Dubiel, B.
    Kot, M.
    Radziszewska, A.
    Łukaszczyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/356668.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium
    porous coating
    corrosion resistance
    electrophoretic deposition
    Opis:
    Porous hydroxyapatite doped SiO2 coatings were electrophoretically deposited (EPD) on commercially pure titanium. The influence of EPD parameters on coatings quality was investigated. Microstructural observation was done using transmission and scanning electron microscopy as well as X-ray diffractometry. The coatings consisted of spherical micro and nanocrystalline hydroxyapatite (HAp) as well as amorphous SiO2 nanoparticles. The coatings exhibited open porosity with pore diameter up to 1 μm and due to presence of nanoparticles high surface development. It was found that application of SiO2/HAp coating increase corrosion resistance of titanium in Ringer’s solution.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 2177-2182
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrophoretic Deposition and Characterisation of Chitosan Coatings on Near-Β Titanium Alloy
    Autorzy:
    Jugowiec, D.
    Kot, M.
    Moskalewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/355398.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chitosan
    Ti13Nb13Zr alloy
    electrophoretic deposition
    coating
    Opis:
    In this study, chitosan coatings were electrophoretically deposited (EPD) on near-β Ti-13Nb-13Zr alloy. The influence of colloidal solution composition and EPD parameters on the quality of chitosan coatings was investigated. It was established that the uniformity of as-deposited chitosan coatings is highly dependent on the chemical composition of the solution used for EPD, the pH, electrophoretic mobility and zeta potential of chitosan colloidal molecules, as well as EPD parameters, such as potential difference value and deposition time. The microstructure of the coatings was investigated using electron microscopy and X-ray diffractometry. The coatings 350 nm thick were homogeneous and exhibited an amorphous structure. The coatings had low hardness and Young’s modulus. The effect of surface of the substrate preparation prior to coating deposition on the adhesion of chitosan coatings to the Ti-13Nb-13Zr alloy was also investigated. The coatings exhibited good adhesion to the non-acid-etched surface of the titanium alloy.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2A; 657-664
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication of YSZ coatings on nickel-based alloys by anodic electrophoretic deposition
    Autorzy:
    Binxia, Yuan
    Tianzhong, Chen
    Yongzhi, Shang
    Haibo, Xue
    Min, Li
    Powiązania:
    https://bibliotekanauki.pl/articles/2204142.pdf
    Data publikacji:
    2023
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    YSZ coating
    anodic electrophoretic deposition
    suspension solution
    nickel-based alloys
    Opis:
    In the paper, YSZ coatings were prepared on nickel-based alloy substrates by anodic electrophoretic deposition. The YSZ suspension solution was obtained under stirring and ultrasonic treatment, in which the anhydrous ethanol and acetylacetone were used as the dispersion medium and ammonium polyacrylate was used as the dispersant of the suspension. The effects of different deposition voltage and deposition time on YSZ coating were investigated. Meantime, the microstructure of the coating surface was observed by metallographic microscope. It was found that the high-quality YSZ coating could be obtained by deposition at 60 V for 2–3 min. Finally, the effect of sintering temperature on coating quality was investigated by X-ray diffractometer and scanning electron microscopy. The results showed that the YSZ coating bonded closely with the substrate after sintering at 1200 °C, and the porosity of the YSZ coating increased after sintering.
    Źródło:
    Polish Journal of Chemical Technology; 2023, 25, 1; 8--11
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Manufacturing, Microstructure and Corrosion Resistance of Electrophoretically Deposited SiO2 and Ni/SiO2 Coatings On X2CrNiMo17–12–2 Steel
    Autorzy:
    Ratajski, T.
    Kalemba-Rec, I.
    Dubiel, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/352531.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electrophoretic deposition (EPD)
    SiO2 coatings
    nancomposite Ni/SiO2 coatings
    Opis:
    The SiO2 and Ni/SiO2 coatings were electrophoretically deposited on X2CrNiMo17-12-2 steel using ethanol-based suspensions of the SiO2 and Ni powders. The influence of the zeta potential and concentration of the suspensions, the applied voltage and deposition time on the quality of the coatings was studied. Microstructure of the plan-view and cross sections of the coatings was investigated using scanning electron microscopy. The plan-view images revealed the uniform microstructure of the coatings with sporadically observed cracks, pores as well SiO2 and Ni agglomerates. On the cross-sections, the Cr2O3 layer, resulted from oxidation of the substrate during sintering of the coatings was observed. The polarization tests have shown that SiO2 and Ni/SiO2 coatings improve the corrosion resistance of the X2CrNiMo17-12-2 steel in 3.5% NaCl aqueous solution.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 1221-1227
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and morphology of whitlockite coating electrophoretically deposited on NiTi shape memory alloy
    Autorzy:
    Dudek, K.
    Goryczka, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/285710.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    β-TCP (whitlockite)
    electrophoretic deposition (EPD)
    shape memory alloy (SMA)
    surface modification
    Opis:
    In order to improve the biocompatibility of NiTi shape memory alloy, the surface was modified by formation of multifunctional layer consisted of titanium oxides and whitlockite ceramic. Amorphous TiO2 interlayer was produced on NiTi substrate by autoclaving at 134°C for 30 minutes while the following whitlockite coatings were deposited using electrophoresis (EPD). Electrophoresis was performed under different voltage (from 20 to 80 V) at time periods (from 30 to 120 s). Applied deposition parameters 20 V and 60 s resulted in forming homogenous whitlockite coating, consisted of β-Ca3(PO4)2 and β-Ca2P2O7, on passivated NiTi alloy. In the next step, the material was heat-treated in vacuum condition at 1000°C for 2 h. As a result of sintering crystallization of titanium oxides was observed. The obtained layer was cracks-free. Applied deposition process increased the roughness of surface. Deposited whitlockite agglomerates had an average thickness ca. 5.6 μm. The structure of CaP coating material after applied heat-treatment remained unchanged in comparison to initial powder material. However, the partial decomposition of NiTi parent phase to equilibrium ones was observed. The whitlockite coating was also observed to have no impact on the martensitic transformation responsible for shape memory effect. Additionally, applied sintering condition changed the sequence of martensitic transformation from one to two-step.
    Źródło:
    Engineering of Biomaterials; 2017, 20, 140; 2-6
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrophoretic deposition of nc-TiO2/chitosan composite coatings on X2CrNiMo17-12-2 stainless steel
    Autorzy:
    Ledwig, P.
    Kot, M.
    Moskalewicz, T.
    Dubiel, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/351827.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chitosan
    TiO2
    electrophoretic deposition
    X2CrNiMo17-12-2 steel
    Opis:
    This paper presents the results of the optimization of electrophoretic deposition parameters for manufacturing of nc-TiO2/chitosan composite coatings on X2CrNiMo17-12-2 steel as well as characterization of their microstructure, electrochemical properties and adhesion to the substrate. The parameters of the deposition, such as composition, pH and zeta potential of suspensions as well as voltage and process time were investigated. The microstructure of the coatings was characterized using scanning and transmission electron microscopy. Obtained coatings were crack-free and uniform. The adhesion strength to the substrate was measured by scratch-test method. The deposited coatings improve corrosion resistance of steel, what was confirmed by the results of the potentiodynamic polarization test in Ringer’s solution.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 1; 405-410
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of different types of carbon nanomaterial on the properties of coatings obtained by EPD process
    Autorzy:
    Wedel-Grzenda, A.
    Tran, K.
    Frączek-Szczypta, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/284778.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    graphene oxide
    multi-walled carbon nanotubes
    electrophoretic deposition
    hybrid coatings
    surface properties
    microstructure
    Opis:
    The first part of research is concentrated on the examination of four kinds of carbon nanomaterials: graphene oxide (GO), multi-walled carbon nanotubes (MWCNT), multi-walled carbon nanotubes functionalized by authors in acids mixture (MWCNT-F) and multi-walled carbon nanotubes with hydroxyl groups (MWCNT-OH). Their microstructure was observed in transmission electron microscopy (TEM). Based on these microphotographs, the diameters of carbon nanotubes were measured. Then, in order to determine the chemical composition of GO, MWCNT-F and MWCNT-OH, X-ray photoelectron spectroscopy was applied. The second part of study concerns the properties of the coatings deposited electrophoretically on titanium surface from previously examined nanomaterials. The coatings from individual nanomaterials, as well as hybrid layers (combination of two kinds of nanomaterial: graphene oxide with one of the nanotubes’ type) were deposited. Microstructure of the coatings was evaluated with the use of scanning electron microscopy (SEM). Furthermore, surface properties, important while considering usage of these materials in biological applications: wettability and surface free energy were evaluated. These materials are meant for application in regeneration and stimulation of nerve cells. All the research carried out so far indicate the influence of nanotubes’ functionalization degree on the properties of their suspension, as well as the characteristics of the deposited coating. It also influences the interaction between two types of nanomaterials. Functionalization in strong acids introduces functional groups which change nanotubes’ dimensions, properties and behavior in solution.
    Źródło:
    Engineering of Biomaterials; 2016, 19, 135; 13-20
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of PAA on the Microstructure and Corrosion Resistance of Electrophoretically Deposited SiO2 and Ni/SiO2 Coatings on X2CrNiMo17-12-2 Steel
    Autorzy:
    Ratajski, T.
    Kalemba-Rec, I.
    Dubiel, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/353252.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electrophoretic deposition (EPD)
    electrosteric stabilization
    SiO2 coatings
    nanocomposite Ni/SiO2 coatings
    PAA
    Opis:
    The effect of anionic surfactant in the form of polyacrylic acid (PAA) on the electrophoretic deposition of the SiO2 and Ni/SiO2 coatings on X2CrNiMo17-12-2 stainless steel was examined. Parameters of the process, such as chemical composition of the suspensions, voltage between the electrodes and the deposition time were experimentally selected. Zeta potential measurements showed a beneficial effect of polyacrylic acid on the SiO2 and Ni particles stability in ethanol. Scanning and transmission electron microscopy studies revealed that the microstructure of the coatings obtained from the suspensions containing polyelectrolyte is more homogenous and has less amount of desiccation cracks on the surface. The results of the polarization tests have shown that addition of anionic surfactant improves also corrosion resistance of the coatings in 3.5% NaCl solution.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 4; 2073-2079
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zinc and graphene oxide composites as new protective coatings for oil and gas pipes
    Kompozyty cynku i tlenku grafenu jako nowe powłoki ochronne rur do przesyłu nafty i gazu
    Autorzy:
    Asghar, M. Sajid Ali
    Amir, Muhammad
    Hussain, Umer
    Sabri, Mohammed M.
    Powiązania:
    https://bibliotekanauki.pl/articles/24202808.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    corrosion resistance
    graphene oxide
    Hummers method
    nanocomposites
    electrophoretic deposition
    odporność na korozję
    tlenek grafenu
    metoda Hummersa
    nanokompozyty
    osadzanie elektroforetyczne
    Opis:
    A method was developed to obtain a durable coating consisting of zinc and graphene oxide (Zn-GO) in order to reduce the mechanical wear and tear rate of oil and gas pipelines made of steel. Graphene oxide was obtained from graphite by wet chemical oxidation (unmodified and modified Hummers’ method) using potassium permanganate and sulfuric acid. The process was carried out at various temperatures. The steel was covered with an ultrathin layer of Zn-GO using the electrophoretic deposition method. The GO particle size (< 90 nm) was confirmed by XRD and laser analysis. For GO particles obtained by the modified Hummers’ method, a significant correlation was observed in the scratch (R2 = 0.87) and the Vickers microhardness tests (R2 = 0.93), which indicates a lower wear rate of Zn-GO-coated steel.
    Opracowano metodę otrzymywania trwałej powłoki składającej się z cynku i tlenku grafenu (Zn-GO) w celu zmniejszenia zużycia mechanicznego rurociągów naftowo-gazowych wykonanych ze stali. Tlenek grafenu pozyskano z grafitu metodą mokrego utleniania chemicznego (niezmodyfikowana i zmodyfikowana metoda Hummersa) z użyciem nadmanganianu potasu i kwasu siarkowego. Proces prowadzono w różnej temperaturze. Stal powlekano ultra cienką warstwą Zn-GO techniką osadzania elektroforetycznego. Metodą XRD i analizą laserową potwierdzono wielkość cząstek GO (≤ 90 nm). Dla cząstek GO otrzymanych zmodyfikowaną metoda Hummersa zaobserwowano znaczącą korelację w teście zarysowania (R2 = 0.87) i mikrotwardości Vickersa (R2 = 0.93), co świadczy o mniejszym stopniu zużycia stali pokrytej powłoką Zn-GO.
    Źródło:
    Polimery; 2023, 68, 7-8; 378--385
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of a Steel Substrate Surface Roughness on the Mechanical Properties of a Peek Coating Deposited with the Electrophoretic Method
    Wpływ chropowatości powierzchni podłoża ze stali konstrukcyjnej na właściwości mechaniczne powłoki PEEK osadzonej elektroforetycznie
    Autorzy:
    Otto, Mateusz
    Fiołek, Aleksandra
    Zimowski, Sławomir
    Powiązania:
    https://bibliotekanauki.pl/articles/2134820.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    powłoka
    PEEK
    właściwości mechaniczne
    chropowatość powierzchni podłoża
    metoda elektroforezy
    coating
    mechanical properties
    surface roughness of substrate
    electrophoretic deposition method
    Opis:
    The mechanical properties, adhesion and roughness of polymer coatings depend on many factors, including the unevenness of the substrate surface. Nevertheless, the influence of the substrate surface roughness is related to the coating type and substrate material and the used deposition method. Therefore, the effect of the surface roughness of a structural steel substrate on the mechanical properties of a PEEK coating is ambiguous. The indentation tests conducted show that, at a specific load of the indenter, the roughness of the steel substrate surface does not significantly affect the Vicker’s hardness of the tested PEEK coatings. The average Vicker’s hardness and elastic modulus are approximately 300 MPa and 5.6 Gpa, respectively, at the lowest of the applied loads, regardless of the surface roughness level of the steel substrate. Nevertheless, the surface roughness of the steel substrate after fine grinding of Ra = 0.21 μm, compared to the polished one with Ra = 0.005 μm, meant that adhesion improved, and the scratch hardness increased by approximately 130 to 370 [MPa] of the PEEK coating.
    Właściwości mechaniczne, przyczepność oraz chropowatość powłok polimerowych zależą od wielu czynników, a w tym od nierówności powierzchni podłoża. Niemniej jednak wpływ wielkości chropowatości powierzchni podłoża okazuje się być związany z rodzajem materiału powłokowego i podłoża oraz zastosowaną metodą osadzania. Wobec tego oddziaływanie chropowatości powierzchni podłoża ze stali konstrukcyjnej na właściwości mechaniczne powłoki PEEK osadzanej elektroforetycznie nie jest jednoznaczny. Przeprowadzone badania indentacyjne wskazują, że przy określonym obciążeniu wgłębnika chropowatość powierzchni stalowego podłoża nie wpływa znacząco na twardość Vickers’a badanych powłok PEEK. Średnia twardość Vickers’a i modułu sprężystości wynosi odpowiednio ok. 300 MPa i 5.6 GPa przy najmniejszym z zastosowanych obciążeń, niezależnie od mikronierówności powierzchni stalowego podłoża. Nie mniej jednak większa chropowatość powierzchni stalowego podłoża po szlifowaniu dokładnym rzędu Ra = 0.21 μm, względem polerowanego o Ra = 0.005 μm, przełożyła się na polepszanie adhezji i spowodowała wzrost twardości zarysowania powłoki PEEK z ok. 130 do 370 [MPa].
    Źródło:
    Tribologia; 2022, 2; 33--44
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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